Self-consistent cosmological simulations of DGP braneworld gravity
نویسندگان
چکیده
منابع مشابه
Cosmological Constraints on DGP Braneworld Gravity with Brane Tension
Lucas Lombriser, Wayne Hu, Wenjuan Fang, 4 and Uroš Seljak 5, 6 Institute for Theoretical Physics, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland Kavli Institute for Cosmological Physics, Department of Astronomy and Astrophysics, Enrico Fermi Institute, University of Chicago, Chicago, IL 60637 Department of Physics, Columbia University, New York, NY 10027 Brookhaven ...
متن کاملScalar Perturbations in Dgp Braneworld Cosmology
We solve for the behaviour of cosmological perturbations in the Dvali-Gabadadze-Porrati (DGP) braneworld model using a new numerical method. Unlike some other approaches in the literature, our method uses no approximations other than linear theory and is valid on large scales. We examine the behaviour of late-universe density perturbations for both the self-accelerating and normal branches of D...
متن کاملQuintom dark energy in DGP braneworld cosmology
In this paper we consider a Z2 symmetrical 3-brane embedded in a 5-dimensional spacetime. We study the effective Einstein equation and acceleration condition in presence of the quintom dark energy fluid as the bulk matter field. The effective Einstein equation on the brane in the framework of DGP model is obtained where the quintom field is considered as the bulk matter field, and a quintom dar...
متن کاملBulk scalar field in DGP braneworld cosmology
We investigated the effects of bulk scalar field in the braneworld cosmological scenario. The Friedmann equations and acceleration condition in presence of the bulk scalar field for a zero tension brane and cosmological constant are studied. In DGP model the effective Einstein equation on the brane is obtained with bulk scalar field. The rescaled bulk scalar field on the brane in the DGP model ...
متن کاملBraneworld cosmological singularities
The purpose of this brief report is to present some results of our on-going project on the asymptotic behaviour of braneworld-type solutions on approach to their possible finite ‘time’ singularities. Cosmological singularities in such frameworks have served as means to attack the cosmological constant problem (see and references therein). The main mathematical tool of our analysis is the method...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2009
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.80.043001